One of the factors required for the maturation of erythrocytes is 

1. vitamin - D

2. vitamin - A

3. vitamin - B12

4. vitamin - C

Subtopic:  Blood: general Description & RBC: Part 1 | Blood: General Description & RBC |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Vitamin-K is required for 

1. change of prothrombin to thrombin

2. synthesis of prothrombin

3. change of fibrinogen to fibrin

4. formation of thromboplastin

Subtopic:  Blood: Blood Clotting |
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NEET 2022 - Target Batch - Aryan Raj Singh

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The thick muscular projections on the walls of the ventricle are called

1. Chordae tendineae

2. Columnae carneae

3. Conus arteriosus

4. Truncus arteriosus

Subtopic:  Human Heart: Gross Anatomy |
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NEET 2022 - Target Batch - Aryan Raj Singh

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When type B agglutinogen is not present on the surface of RBC of a person, his plasma would contain ____ agglutinins.

1. Anti-a                          2. Anti-b

3. Both anti-a and anti-b   4. None

Subtopic:  Blood: Blood Group (A,B,O) |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Oxalates and citrates are used as anticoagulants in stored blood because they:

1. Chelate calcium ions

2. Act as competitive inhibitors of vitamin K

3. Potentiate anti-thrombin III

4. Activate heparin

Subtopic:  Blood: Blood Clotting |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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With respect to blood, the composition of lymph can be expressed as:

1. No RBc, No Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles lymphocytes.

2. No RBc, No Plateletes, Less proteins, More calcium and phosphorus, Predominant corpuscles lymphocytes.

3. No RBc, Less or no Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles macrophages.

4. No RBc, less Plateletes, Less proteins, Less calcium and phosphorus, Predominant corpuscles monocytes.

Subtopic:  Lymph |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Histamine in blood is secreted by:

1. Mast cells

2. Macrophages

3. Eosinophils

4. Basophils

Subtopic:  Blood: White Blood Cells |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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A person with AB blood group:

1. Has A and B antigens in his plasma

2. Lacks any antibodies on RBC surface

3. Can receive blood transfusion from a person of his own group.

4. Can donate blood to all other group recipients

Subtopic:  Blood: Blood Group (A,B,O) |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The inter-atrial septum in the human heart can be best described as:

1. A thin muscular wall

2. A thick muscular wall

3. A thin fibrous tissue

4. A thick fibrous tissue

Subtopic:  Human Heart: Gross Anatomy |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The sino-atrial node is the normal pacemaker of the human heart because:

1. It is located in the right atrium

2. It is the only part of the conducting system that can generate impulse

3. It can generate the maximum number of action potentials in the conducting system

4. It produces action potentials that are more in size than the other parts of the conducting system.

Subtopic:  Human Heart: Gross Anatomy |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: